Guards! Guards! is an example of the humor and the imagination of TerryPratchett.

Set in the Discworld, in Ankh-Morpork, its main characters are the unlikely guards of the night watch: captain Vimes, almost an alcoholic for his depression due to lack of work, fat and lazy Sargent Colon, Corporal Nobbs, on the boundary of the definition of human. To close the team there is Carrot, a young man grown up among the dwarfs and a man of the utmost integrity with a marked sense of duty.

They will end up facing a most unexpected situation when a dragon will threat the city, without any help except from a few people, like Lady Sybil Ramkin, swamp dragons breeder, and Errol, a funny and original little swamp dragon.

The novel is funny and the story is quite engaging, in particular in the beginning part, where everything is new.

Terry Pratchett died some weeks ago, but luckily his novels are still here to help remembering him.